• Satisfies building and energy codes for insulation over the attic access panel. • Airflow through the attic stair opening is likely the most significant comfort and energy loss in any residence. In addition to the Draft Cap's Rl 1 value, it saves the most energy by reducing airflow. • Qualifies for the energy credit. • Has a UL-94HF- 1 rating for flammability. • Made of durable, dust-free expanded polystyrene foam. • Weighs only 8 pounds. • Fits standard 25 inch by 54 inch RO. • Can be used in 2x6, 2x8, 2xl O and 2x 1 2 ceiling joist construction. • Made in the USA.